Select Global for both the major and minor axis. "Global" means that the bracing will be determined by the global criteria (i.e. reset to its original default).

Single: To reset bracing for one column, click Single. This will cause the dialog box to close and the target cursor to appear. Click on columns with the target to reset the bracing. The symbols on the screen will update to indicate that the change has been made.

Fence: To reset bracing for a group of columns, click Fence. This will cause the dialog box to close and the rectangle cursor to appear. Click and drag the rectangle to include the columns for which bracing will be reset. The symbols on the screen will update to indicate that the change has been made. (HINT: When assigning in Fence mode, it is often a good idea to be in plan or elevation to insure that only the desired columns are fenced)

All: Clicking the All button will cause the dialog to close and all steel columns in the model to return to the bracing default.